COMPONENT REFERENCE / 01
Resistor Code Tool.
From resistance to color bands and back again. Includes SMD markings and preferred E-series values.
CONTROL PANEL
Resistor configuration
The tool selects the nearest resistor value representable in the chosen band format and E-series. Your requested value may not exist exactly.
Individual band settings
Choose one color per band when decoding from colors to resistance.
LIVE PREVIEW
Resistor visualization
Decoded nominal resistance——
Deviation from target—
Band pattern—
The drawing is illustrative; physical band spacing and resistor body colors vary between manufacturers. Verify ambiguous bands against a datasheet or multimeter.
SURFACE-MOUNT RESISTORS
SMD decoder
Supported: standard 3-digit and 4-digit codes, R decimal notation, EIA-96, and zero-ohm jumpers.
Decoded resistance——
REVERSE LOOKUP
Resistance → SMD marking
472
Nearest representable marking——
SMD marking conventions vary. Some small resistors are unmarked, and proprietary markings require the manufacturer's datasheet.